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Centaur stage series
LOx/LH2 propellant rocket stage. The first high-energy liquid oxygen/liquid hydrogen propellant stage in history. Despite initial development problems, the Centaur is entering its seventh decade of development and production.



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Centaur C LOx/LH2 propellant rocket stage. Initial flight version of the Centaur series.

Centaur D/E LOx/LH2 propellant rocket stage. .

Centaur B-X LOx/LH2 propellant rocket stage. Conceptual design, 1998. Not put into production.

Centaur C-X LOx/LH2 propellant rocket stage. Conceptual design - in development 1998, not put into production.

Centaur IIIA LOx/LH2 propellant rocket stage. Single-engine Centaur for Atlas IIIA.

Centaur G LOx/LH2 propellant rocket stage. Centaur for Titan 4.

Centaur V1 LOx/LH2 propellant rocket stage. Single-engine Centaur for Atlas V. Centaur is powered by either one or two Pratt & Whitney RL10A-4-2 turbopump-fed engines burning liquid oxygen and liquid hydrogen. For typical, high-energy mission applications, Centaur will be configured with one RL10 engine. Guidance, tank pressurization, and propellant usage controls for both Atlas and Centaur phases are provided by the inertial navigation unit (INU) located on the Centaur forward equipment module.

Centaur V2 LOx/LH2 propellant rocket stage. Dual-engine Centaur for Atlas V. For heavy payload, low earth orbit missions, Centaur will use two RL10 engines to maximize boost phase mission performance.

Centaur IIA LOx/LH2 propellant rocket stage. .

Centaur IIIB LOx/LH2 propellant rocket stage. Dual-engine Centaur for Atlas IIIB. The Lockheed Martin manufactured Centaur IIIB upper stage is powered by two Pratt & Whitney RL10A-4-2 turbopump-fed engines burning liquid oxygen and liquid hydrogen. The changes to Centaur for Atlas IIIB are a stretched tank (1.68 m) and the addition of the second engine.

Centaur I LOx/LH2 propellant rocket stage. .

Centaur II LOx/LH2 propellant rocket stage. .

Centaur G STS LOx/LH2 propellant rocket stage. .

Centaur G Prime LOx/LH2 propellant rocket stage. Centaur for Shuttle payload bay. Cancelled after Challenger disaster on safety grounds.



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